Adding-machine.



B. DYSART.

ADDING MACHINE.

APPucATloN man MAY 2s. 1917.

Patented 0st. 22, 1918.

3 SHEETS-SHEET l.

B. DYSART.

ADDING MACHINE.

APPLICATlON FILED MAY25.1917. 1,282,958.

Patented Oct. 22, 1918.

' 3 SHEETS-SHEET 2.

B. DYSART.

ADDING MACHINE.

,APPLICATION FILED Mln/25,1917.

Patented Oct. 22, 1918.

3 SHEETS-SHEET 3.

BInNnY DYSART, or CINCINNATI, omo.

ADDING-MACHINE.

Specification of Letterslatent.

Patented Oct. 22, 1918.

Application led May 25, 1917. Serial No. 170,863.

To all whom t ma concern:

Be it known tat I, BIRNEY DYsART, a citizen .of the United States,residing at the city of Cincinnati, county of Hamilton, and State of0hio, have invented .a new and useful Adding-Machine, of which thefollowing is a specification.

'This invention relates t0 adding machines.

An .object .of the invention is to provide anadding machine having -aseries of adding pinions for wheels operable to receive and add theamounts by cooperation with the actuating racks, one of the racks beingarranged to coperate simultaneously with a plurality kof orders inthedierentiail mechanism .and at one .operation introduce into a single one.of .the adding -pinions a number composed of a plurality vof digits setup or registered indifferent numerical orders in the .differentialmechanism.

Another object ofthe invention is to provide an adding machine having adifferential mechanism in vwhichthe digits of the numbers may be set upin dierent numerical orders :according to lthe decimal system ofnotation, in which ten units of one order make .one unitof the .nexthigher order; and to provide such machine with equipment by which thenumbers may be added and the .sum .thereof v.exhibited or recordedaccording gto-.a dierent system of notation as, for instance, -the.duodecimal system in which twelve units Vof one vvorder make one unit.of the 'next higher lorder.

Y,A further object ,of .the invention is to provide an ladding machineincluding dierential mechanism capable of having set up therein avcompound `number in which there is a varying relative value ,betweenvditl'erent columns :or numerical orders, and in which machine aplurality of such compound numbers may be 4successively set up and addedand thesum thereof exhibited according to such compound systemofnotation regardless of the fact ,that 4the number of units in `someorders, kaccording -to such compound system of notation required to makeone unit of the next higher order, may be greater than ten and not aneven vmultiple thereof.

vAn Aadditional object is to provide an adding machine :of the charactermentioned in which each digit when introduced or set up in the machineis represented -by a stop in units numerical order and is automaticallyadvanced progressively to the next higher order as incident :fo ltheintroduction or setting up of each succeeding digit, the last digitintroduced or set up remaining in units order and in which the highestdigital value which can be introduced or registered in any given orderis nine, and further in which the various numbers so introduced or setby successive operations may be added and the sum thereof exhibitedaccording to a system of notation in which the number of units requiredto ma-ke yone unit of the next higher order` is more than ten.

Among the specific objects of the invention may be mentioned theadaptation and equipment of the well known Dalton adding machine whichis manufactured in substantial conformity with thc adding mechanismshown in Hubert Hopkins Patent No. 1,039,130, dated September 2i, 1912,with cooperating mechanism embodied in and constituting a part of themachine operable to handle amounts expressed in denominations oi'English currency such as pounds, shil lings and pence; also commonfractions such as twelfths, sixteenths, etc.; feet and inches; hours andminutes; degrees and minutes; bushels and pounds; and various othermathematical computations.

The drawings illustrate one form of the invention embodied in a Daltonadding machine. In the specific embodiment illustrated the machine isadapted for handling of English ycurrency including pounds, shillingsand pence. According to the English system of currency twelve pencemake'one shilling, and twenty shillings make one pound. While in thisyarticular embodiment of the invention illustrated only the recordingmechanism of the two lower numerical orders are modified. It is obviousthat the same or other modifications necessary to perform other orsimilar examples of computation could be extended to any other orders inthe machine, in which case the machine would be provided withdifferential mechanism in which the numbers would be set up according tothe decimal system yof notation and the sums when added would berecorded .or made to appear ac- @Ording to the duodecimal system ofnotation. A single character would in that case be employed for l0 andalso another character for 1l, just as for the digits l to 9.

In the drawings, in which I have illustrated the present invention,

Figure l is a side elevation of the operating mechanism, the case of themachine and certain of the'Y shafts and other parts thereof being insection.

Fig. 2 is a view illustrating the type-carrier and some of itsassociated partsl which cooperate with stops in one or two numericalordersin the differential mechanism as required to record and add one ormore digit at a single operation.l g

Fig. 3 is a rear elevation of the recording type-carriers and theassociated racks which coperate with the adding wheels or pinions.

Fig. 4 illustrates in detached relation two coperating members whichcoperate with the type-carrier that is operable to record one o-r moredigits at` a single operation.

Fig. 5 is a sectional view on a line 5-5 of Fig. 1.l

Fig. 6 is a detail view illustrating in rear elevation Ythe controllingmembers which cooperate with the stops in two numerical orders in thedifferential mechanism to enable the digits set up in said two orders tovbe recorded by operation of a single typecarrier. Some of the partshave been omitted for the sake of clearness.

. Fig. 7 is an inverted view illustrating the two pinions and racksconstituting a part of the mechanism Shown in Fig. 6.

Fig. 8 is a detail view showing some of the controlling mechanism thatwas omitted from Fig. 6.

Fig. 9 is an enlarged view of the adding l pinion or wheel in the tensof shillings order by which carryingor transferring to the neXt higherorder, that is to the units of pounds order, is caused every time thetens of shillings wheel moves two spaces or teeth.

As previously stated, my present invention is shown embodied in anadding machine which includes many of the elements and mechanismsdisclosed in Hopkins Patent'No. 1,039,130. The adding machine of ythatpatent is well known commercially as the Dalton adding machine. TheDalton adding machine which is manufactured under the `Hopkins patentmentioned includes a series of ten numeral keys 1 conveniently arrangedin a key board and mounted upon levers 2 which are pivoted upon asupport 3. The levers 2 converge at their rear or inner extremities andall but that for the figure 9 are provided with hammers or eX- tendedportions 4 formed in a row at'right angles to the rows of keys in thekey board. The hammers or extensions 4 are arranged toact upondifferential stop pins V5 supported by a transversely movable frame orcarriage 6 having rollers 7 operating upon transverse rails 8. Thedigits of the numbers are set in the differential mechanism by operationof the keys and as an incident thereto the carriage and the stopstherein are moved laterally from order to order to positionthe stops -tolimit movement ofthe type-'carriers and.' their' lassociated riers andracks are pivotally suspendedfrom ,ashaft 9. Each of the type-carriersvv,1s cooperatively related to a hammer 10 normally held by releasablelatches 11 from which they are independently releasable as an incidenttooperation of `corresponding type'-,

carriers to recording position.y .'IheV typecarriers-and racks arenormally held in 4retracted positions by a transverse; rod 12 supportedcross wise in front ofthe depending portions lof the type-carriers andracks by arms 13 carried by the shaft 9.

f After any number has been set in the differential mechanism the arms13 are swung forwardly to carry the rod 12 out of contact. with thetype-carriers and racks, whichv are thereupon actuated by springs 14untilv stopped by engagement with the differential.

stops 5 in the usual manner. i

The adding mechanism of the Dalton adding machine and the machine of theHopkins patent mentioned, comprises a series of adding pinions orWheelsil (Fig.-5)1,in dependently revolubly mounted upon a shaftsupported by a swingingv frame 16.' The Y adding pinions or wheelsare'movable by oscillation of the frame 16 into and out of mesh with theracks 17 cooperatively associated with the type-carriers so that, as anfincident to the operation of said type-carriers to record the numbersset up in the diiferential mechanism, the adding pinions or wheels willbe operated to add the numbers. In the usual decimal system of nota-ltion the racks and pinions areautomatically operable to carry ortransfer from lower to higher numerical orders in the series when thetotal value of the digits introduced intov any of the wheels or pinionsby successive operations thereof amounts to ten foreach numerical order.Thus, when the pinion or wheel in unitsorder has been set to indicatenine for instance, and another digit is added `thereto, the units pinionor wheel-is operated to or beyond the decimal position and as anincident thereto the rack in tens order' the above described mechanismsof the Dal-- ton adding machine thatI have chosen to illustrate thepreferred embodiment of my present invention. In the present instance Ihave illustrated my invention adapted for Y' the addition of English'currency-with'the provision that thereshall 'be'.a -single nu-j mericalorder of the recording mechanism fon recording pence; that the next twohigher -numerical orders of the recording mechanism shall beoperativefor recording shillings, and theremaining higher numerical-,orders ofthe recording mechanism shall loe-operative for recording pounds; andwith the further lprovision for automatically effecting theytransferring or translation of pence toshillings, and shillings topounds, in` accordance with the English currency system. vThus, when thetotal of pence added in the machine equals or exceeds twelve pencetransferring is automatically eft'ectedvinto the units order ofshillings, since, according to the English currency system,.-twelvepence. make one Shilling. So, also, whenthe total of shillings added inthe machine equals or exceeds twenty shillings transferring isautomatically eected into the units order of pounds, since, according tothe English currency system, twenty shillings make one pound. It will beunderstood, of course, that the system of transferring from lower tohigher orders may readily be varied for the addition and translationinto their higher equivalents of inches tojfeet, minutes to hours,minutes to degrees,.pounds to bushels, and other examples-of thatgeneralclass without materially or 'in principle varying or departingfrom theembodiment: of my invention illustrated.

.Aspreviously stated, I prefer to employ a single type-carrier forrecording the number of pence. In the form shown the typel carrier v18is of the ysame general shape and configuration yas the type-carriers ofthe usual Dalton adding machine, except that said carrier supports arack 19 adapted to coperate with a specially constructed pinion 20independently revoluble upon the same shaft Awith the pinions 15. Thepinion k-2O.in .the machine for addition of Englishcurrency-.is thepinion for the addition of pence and is therefore. formed with twelve;teeth, so,..tha"t at each complete revolution off said pinion 2Ocarrying or transferring will be leffected into the units of shillingsordenin the same way that carrying or transferring is attained in theadding machines previously mentioned. The type-carrier 18 is furtherformed with a rack 21 which is in constant mesh with a small pinion 22revolubly mounted upon a supportingstud 28in rigid connection with alarger pinion 2/1. The two pinions 22 :and 24 constitute a part of thecontrolling mechanism whereby the single type-carrier 18 is contiplled'by the diiferential mechanism to record the pence items.- Thus, on someoccasions it is necessary to record an item of 1, 2,- 3; or pence, forinstance, and on other occasionsl it isnecessary'to record items of 10or .11 pence, for instance. In the latter case the single type-carrier18 must necessarily 'operate to .;record the two digits-indieating thenumber of pence, and said two digits are indicated by stops 5 in twodifferent numerical orders in the differential mechanism. Thisnecessitates the provision of devices for cooperating with the stops inthe two diiferent numerical orders in the differential mechanism at theSametime in order that the type-carrier 18 may be operated to record 10or 11 pence as may be required. F or the recording of the pence thetype-carrier 18 is equipped with twelve movable type arranged insequential order from a type for printing Zero at the top to a type forprinting eleven at the lower end of the series. In the Dalton addingmachine and the machine of the Hubert Hopkins patent hereinbeforereferred to the type-carrying sectors stand with the 0 typev slightlybelow printing position. The type-carrier 18 is so arranged that its 0type stands in printing position when the type-carrier 18 is in its idleposition. The rack 19 associated with the type-carrier 18 is neverrequired to operate in the carrying or transfer of the tens, as there isno lower order from which carrying could be necessary. No necessitytherefore exists for the extra movement away from printing positionusually found in the Dalton machine. This extra movement is provided forin the present instance in the case of all the remaining type-carriers.

I will now describe the mechanism under control of the differentialmechanism for governing and controlling the type-carrier 18 in itsrecording and adding operations to record and introduce into the addingpinion 20 at a single operation any digit or number from one to eleveninclusive. While each of the type-carriers otherv than the type-carrier18 has a projecting part 26 (Fig. 8) for engagement with thedifferential stops to limit movement of the typecarriers and racks, itwill be observed by reference to Fig. 2, that the type-carrier 18 1710does not have any projection corresponding to the projection 26; and asa result of this construction, the type-carrier 18 must be controlledand limited in its movements otherwise than by such a projection. A rack115 member 27 is suspended from the shaft 9 in a position correspondingto the next lower numerical order from the type-carrier 18, and is inconstant mesh with the pinion 24.

As previously stated, the pinion 24 is in 120 rigid connection with thepinion 22 so that both of said pinions revolve together; and the pinion22 is in permanent mesh with the rack 19 constituting an integral partof the type-carrier 18. In the particular embodi- 15215 ment of myinvention illustrated, which is for the addition of English currency,the pitch line of the pinion 22 is tothe pitch line of the pinion 24approximately asten isto twelve; or, expressed in another ina-nner, thepinion 22 may contain ten teeth while the Vpinion 24 has twelve teeth.These two pinions being rigidly united and revolubly mounted upon thestud or shaft 23, it is obviousthat when ythe rack 27 moves, the rackV19 and the Ytype-carrier 18 will also move inthe same direction, but ata less rate ofspeed or ratio of movement, beingY rearward extension 31,and a retractile spring 34 (Figs. 1 and 2) connects the said arm 31 witha stationary part 35V and is thereby effective to actuate both the rack27 and the part 30 forwardly when the projection 28 reaches the forwardend of the slot 29. As previouslystated, the entrained connection of therack 27 with the typecarrier 18, through the pinions 24 and 22 and therack 21 results in moving the typecarrier 18 relative to the rack 27 inthe proportion of ten spaces or teeth for each twelve spaces or teeththrough which the rack 27 moves. A pawl 36 is pivoted to the part 30 at37 and has a hook on its forward vend normally engaging in front of theprojection 28 thereby latching the rack 27 with the part 30. A spring 38connecting the pawl 36 with the part 30 yieldingly retains the pawl inlatching position and prevents independent movement of the rack 27relative to the part 30, except when 10 pence orA 11 pence are set up inthe differential mechanism and the machine is operated to record suchitem and to introduce it into the adding pinion 20. XVhen the pawl 86 isdisengaged from the projection 28, movement of the pawl bythe spring 38is limited by an abutment 39 so that when the projection 28 is pressedagainst the oblique forward end of the pawl 36, the latter will bepressed downwardly to permit the pawl to .pass to the rear end of theslot 29 and again be engaged by the pawl. The part 30 is provided with aproject-ion 40 adapted to engage with one of the differential parts 5 inunits numerical order and thus limit movement of the part 80. Sincemovement of the rack 27 and the part 30 is permitted when any one of thedifferential stops is set to represent units of pence, it will beunderstood that said parts are movable to'di'erent positionscorresponding to any of the digits representing units of pence from 1 to9 inclusive,

and that the type-carrier 18 and rack 19 move cordinately therewith atless rate of speed and to less extent in order to carry out the properratio of differential moveofthe two stops in units Vand 'tens'numericalorders, so that at one operation of the type-V carrier the item of10'pence or 11 pence. will be recorded andintroduced into the addingpinion 20. This' necessitates the provision of means for cooperatingwith thetwo stops representing pence in units and tens numerical orders,so that the type-carrier will be properly controlled to record that itemand to introduce it into the adding pinion. I will -now describe themeans for attaining that control. i

An arm 41 is pivoted upon the shaft 9 between the type-carrier 18 andthe. rack 27 and is provided on its lower end with a forward projection42 in vertical `alinement with the rack 19 and spaced in .theneXt highernumerical order from the projection 40. That is to say, the projections26. on the usual type-carriers and the projections 4() and 42 areequi-distantly spaced in conformity withthe rows Vof dierential stops 5in Vthe carriage 6, so that when the stops are setl in units, tens,hundreds and'thousands numerical orders, for instance, inthedifferential Vmechanism, the projection 40 will engage the stop in unitsnumerical order, the projection 42 will engage the stopY in tensnumerical order and the neXt adj'a? centprojections 26 will engage thestops in hundreds and thousands numerical orders, respectively. The arm4l also has a rearward projection43 having a pin 44'engaging in a slot45 in a bell crank lever 46 piv= otally mounted upon a shaft 47supported by the frame of the machine rearwardly from the type-carriersand racks. A retractile spring 48 connects the forward arm of the bellcrank lever 46 with a rod 49 supportedby the arm 41 and normallyabutting against the arms 13 and thereby holding the projection 42rearwardly out of the path ofmovement of any of the differential stopswhile they are being moved transversely of.

spring 48, and thus disengage or unhook the y eo paw-l 36 vfrom V'theprojection l28, and vthus enable the spring 34 to actuate the rack 27`Yforwardly the full length of the slot 29, or Y until the projection 28contacts with theforward wall of said slot.

driven to print "by the hammer 10 coperativelyrelated tothe type-carrier18.

Through the usual controlling mechanism of the Dalton adding machine,'as disclosed yin 'the Hopkins ipatent and other patents,

adding pinions or wheels are disengaged from the-racks during forwardmovement of the ltype-carriers and are automatically engaged with theracks throughout their return movement, so that the numbers recordedwill be .introduced intothe adding mechanism. Therefore, when thetype-carrier 18 is operated in the manner described to record the itemof 10 pence, the addingpinion 20 vwill be operated on the return orrearwardmovement of the-type-carrier 18 and its connected Crack '19, andthereby set to represent the itemy of 10 pence or add the same toanyother item of pence previously introduced into the adding pinion 20.

If it be required-to record or add the item of vllapence, in addition tosetting the 1 stop in tens of pence order,fthere would be another IlStop set in the units of pence order and, when the controlling mechanismof the machine is operated, the part 30 will be moved forwardly toengage the projection .-10 with the 1 stop in units order. Obviously,this will enable the rack 27 to move a corresponding 'additionaldistance forwardly, thereby also actuating the typecarrier 18v and Aitsconnected rack 19 an equivalent proportionate distance in order topresentthe 117 type on said-type-carrier at the recording' line. On thereturn movement of the type-carrier the adding pinion 20 will be' turnedor set to represent 11 pence, or said item .will be added to any otheritem of pence represented lin said pinion, and transferring to the nexthigher order, which is the units orderof shillings, is effected in theusual manner. As is well known transferring from -a lower to a higherorder in a machine of the Dalton type is effected by movement of therack in the higher order to which the transfer is made. Such movementoccurs when the latch for the rack in the higher order is trippedby theadding pinion inthe order from which the transfer is made. Intherpresent instance the pinion 20` controls the latch for the units ofshillings pinion'just as in the usual Dalton machine so thatat eachcomplete revolution of the pinion 20 transfer is made to the units Offshillings pinion. When 9 pence or less are to be recorded and added the0 stop `is set in the tens of pence order and this stop preventsmovement of -the arm 41 as a consequence of which the pawl 36 is notreleased from the projection 28. It is therefore seen that values notexceeding 9 pence are introduced into the adding pinion by the forwardmovement of the rack 27 while it remains latched with the part 30, saidrack 27 actuating with it the type-carrier 18 and the rack 19.

Since, according to the British system of currency, twenty shillingsmake one pound, it is-necessary to carry or transfer from the tens ofshillings order to the units ofpounds order whenever the total ofshillings equals or exceeds twenty. This necessitates carrying ortransferring from tens of shillings to units of pounds order by eachalternate tooth on the adding pinion in the tens of shillings order. Forthis purpose the tens of shillings pinion illustrated in detail in Fig.9 is provided with a tripping or carrying lug '5l on eachalternate'tooth which operate to effect carrying or transferring to theneXt higher order that is, to the units of pounds order, in preciselythe same manner that the usual carrying lugs operate to effect carryingor transferring in the orders heretofore mentioned.

In amounts like 153 6s 9d if a 07 is not desired before the 6 inshillings and the 9 in pence provision may be made in a well understoodway for properly splitting the machine to interrupt the automaticprinting of ciphers .at these'two places.

I claim:

1. An adding machine, comprising differential mechanism, adding pinions,racks for operating the adding pinions to add the items set up in thedifferential mechanism, and means for limiting movement of the racks bythe dierential mechanism, one of said racks being arranged to coperatesimultaneously with a plurality of orders in the differential mechanismand to operate one of said adding pinions to position to represent anumber composed of a plurality of digits set up in a plurality of ordersin the differential mechanism.

2. Anadding machine, comprising differential mechanism corresponding toa plurality of numerical orders, adding pinions for adding items set upin the differential mechanism, racks controlled by the differentialmechanism for operating the adding pinions in adding operations, anadditional adding pinion settable in positions to represent one or moredigits in the process of addition as required by the nature of the workbeing performed by the machine, a rack for operating the additionaladding pinion, and means for causing said last-named rack to .introduceinto ksaid additional pinion at one 'accordingto the decimal system ofnotation in Which-ten units of one order make one unit of the neXthigher numerical. order; adding pinions for adding the numbers. set upin the diierential mechanism; racks controlled by the differentialmechanism for operating the adding pinions to introduce therein theitems set up in the dierential mechanism, vcertain of said racks beingarranged to operate the corresponding adding pinions to add Vand totransfer from lower to higher orders according'to the decimal system ofnotation, and another rack being arranged to, operate the correspondingadd: ing pinion to transfer thereto 4*only when 1 more than ten unitsare added in the pinion from which, transferring Vis effected; and

means for controlling the rack corresponding to theV last-named pinionby parts of the differential mechanism in a plurality of orders. wherebythe last-named yrack will introduce into` thecorresponding adding pinion at a single operation a number consisting of a plurality of digitsset up in adjacent orders in the differential mechanism.

4.* An adding machine, comprising differential mechanism correspondingto a num.- ber of numerical orders and arranged to have the digits ofnumbers set up therein, adding pinions for adding numbers 'set up in thedifferential mechanism, an actuator for one of said. addingpinions, andmeans for controlling said actuator to introduce into the adding pinionoperated thereby at a single operation the digits set up in a pluralityof numerical orders in the differential mechanism.

5. An adding machine, comprising differential mechanism including stopssettable in different numericalv orders to represent the digits ofnumbers, adding pinions for adding the numbers set up in thedifferential mechanism and racks controlled by the differentialmechanism for operating the adding pinions in adding and transferringoperations to add the numbers set up in the differentialmechanism, oneof the racks being arranged to coperate simultaneously With stops in aplurality .of numerical orders in the differential mechanism.

6. An adding machine,-comprising differential mechanism including stopssettable in differentA numerical orders to represent the l digits ofnumbers to be added, adding pinions for adding Athe numbers set up inthe differential mechanism, 1 racks controlled by the. differential.mechanism for operating the adding pinions to add the numbers set up inthe differential mechanism, one of the racks .being arrangedto coperatesimultaneously Withstops in a plurality of orders inthe differentialmechanismvand with one lof said adding pinions, and a type-carriercoperating `With vthat one rack for recording the digits represented inthe differential mechanism with which said rack coperates.

'7. An adding machine, comprising diiferential stops settablerin dierentnumerical orders to represent the digits lof numbers, adding pinions,racks controlled by the differential stops, and means for causing one ofthe racks to introduce into oneY of said adding pinions at one operationan item composed of a number of digits represented by stops in thedifferent numerical orders.

8. An adding machine, comprising differential stops settable indifferent-numerical orders to represent the digitsV of numbers, addingpinions, racksv controlled by the diiferential stops, means for causingone of the lracks to introduce into one of said ,adding pinions at oneoperation' a1 i item composed of a number of digits represented by stopsin the different numerical orders, and a recording device coperating.with that one rack for recording at the same operation therewith thenumber introduced into the adding pinion.

9. An adding machine, comprising differential mechanism arranged in aplurality of numerical orders, adding. pinions, racks controlled by thedifferential mechanism for actuating the addingk pinions, means wherebyone of said racks will operate a single one of the adding pinions tointroduce therein at one Voperation a number composed of a plurality ofdigits setup in the differential mechanism, a type-carrier coperatingWith the last named rack, type on'said type-carrier, and meanscoperating with said type-carrier and type to print at the sameoperation with said rack the plurality of digits introduced by said rackinto said adding pinion. Y

10. An adding machine, comprising differential mechanism including stopssettable in different numerical orders, adding pinions, racks controlledby the differential mechanism, means Vfor controlling one of said racksin each operation thereof by stops in a plurality of numerical ordersand causing said rack to operate a single one of the adding pinions, anda recording device coperating with that one rack for recording thedigits introduced 'by said one rack into said single one of the addingpinions.

11. An vadding machine, comprising differential mechanism includingstops settable in different numerical orders to represent the digits ofnumbers, in combination with an actuator controlled in each operationanism controlling ,said actuator.

12. An adding machine, comprising differential mechanism including stopssettable 'inl different numerical orders to `represent the d1jg1ts vofnumbers, 1n combination with ansractuatorycontrolled* in each operationthereof by stops in a rplurality of numerical "orders, a single addingpinion under cont-rol of .said 'actuator and settable Vthere- 'byito-frepresent the plurality of digits represented by the rstops in thediii'erential mechanism f'controlling ysaid actuator, and a recordertforire'cordi-ng atthe same operation the plurality of digitsaforesaid.

1'3."An vadding machine, comprising diflferential mechanism,addingpinions, a rack for voperating one of vsaid adding pinions,

means for coperating said rack and the differential mechanism tointroduce into the adding pinion'operated thereby at a single operationthe digits set up .ina plurality vof orders in :theditferentialmechanism, and a recorder eopera'ting with said rack forrecording u.said digits.

114. In'an adding machine, anadding pinion',l a rackforoperatingsaidadding pinion, a'type-carrier `in connection with saidrack, an additional rack in connection with said typefcarrier, i*acontrolling pinion meshing with said additional rackfmeans `foractuatingsaid{type-carrier and said racks to different selectedvpositions, and means coperating vrWit-h said controlling ypinion to stopsaid typescai-rier'and said racks in their different selected positions.

AX15. InL an ,adding 'machine an adding pinion, a Yrack for voperatingsaid adding pinion, atype-carrier in connection with said rack, anadditional rack in connection with said type-'carrien-a controllingpinion meshing-with said additional rack, means-for actuating `said-ltype-carrier and said racks to different selectedepositions, stops,and means coperating:with-.said stops for stopping rotation ofsaidcontrolling pinion as required to stop said typec-arrier and saidracks in their f different selected positions.

*16J liran adding machine, an `adding pinion, a rac-k "for operatingsaid adding pinion, 'ian additional rack in connection with saidfirst-named rack, :a controlling f pinion meshing with said additionalrack, means for operatil'ig said racks -as required to actuate-saidadding pinion in adding operations, and means for `stopping saidcontrolling pinioniafter rotation to any desired extentjoylimitmovement'of said racks.

1T. Infan adding machine, an adding pinionya rack lfor actuating lsaidadding pinion in adding operations, an additional rack in connectionwith said first-named rack, a controlling pinion-permanentlymeshing withsaid additional rack, a spring actuated connection for actuating saidracks in one direction, mechanism coperating with said controllingpinion to stop movement of said racks in the direction aforesaid, and adevice for actuating said ra cks to their starting points as required toactuate said adding pinion in adding operations.

18. In an adding machine, an adding pinion, a rack for operating saidadding pinion, a controlling pinion lfor limiting movement oit saidrack' in one direction, stops, Vmovable devices under control of saidstops, and means whereby saidmovable devices control andvlimit rotationvof said controlling pinion.

19. In an adding machine, an adding pinion, a yrack for actuating saidadding pinion, a controlling pinion for limiting movement of saidrack,an additionalpinion in connection with said controlling pinion, andmeans coperating-With said additional pinion to stop rotation of saidcontrolling pinion and thereby stop movement of said rack in differentselected positions.

20. In an adding machine, an adding pinion, a rack for actuating saidadding pinion, a controlling kpinion for controlling said rack, anadditional pinion in connection with said controlling pinion, a incl:tor limiting rotation ofl said controlling pinion, and differentialmechanism controlling said last-named rack.

21. In an adding machine, an adding pinion, a rack for operating saidadding pinion in adding operations, a controlling pinion for limitingmovement of said rack in one direction, an additionalpinion inconnection with said controlling pinion, a controlling rack meshingVwith said additional pinion, a device for stoppingfmovement of saidcontrolling rack, and differential vmechanism controlling said device.

2Q. In an adding machine, an adding pinion, a rack for operating saidadding pinion, a controlling pinion for limiting movement ot said rackin one direction, a controlling rack for stopping rotation of saidcontrolling pinion, a device for stopping movement of said controllingrack, a connection between said device and said controlling 'racln anddifferential mechanism for stopping movement of said devicoin differentselected positions.

23. In an adding machine, an adding pinion, a rack for operating saidadding pinion, an additional rack in connection With said first-namedrack, a pinion meshing with said additional rack for stopping movementof said racks in one directiommeans toractuating said racks, devices forlimiting movementof said controlling pinion, and 'difierential mechanismcontrolling said devices.

524.1111fana-addingfmachine, an adding pinion, a' rack for 'operating'said adding pinion', an '-additional raclr in connection withVsaidlirst-named rack, a controlling pinionfor limiting movement of saidadditional rack, a rack governing saidcontrolling pinion, anddiii'erential mechanism for stopping movement of said last-named rack.

.25... In an vadding machine, the combination with an adding pinion, 'arack for operatingsaidadding pinion, and al controlling pinion/forcontrolling said rack and limiting extent of movement thereof, ofdifferential mechanism, an additional pinion inconnection with saidcont-rolling device, and means cooperating with said differentialmechanism and said additional pinion to determine eXtent of movement ofsaid controlling pinion and to stop movements oi' said controllingpinion 'and thereby said rack in different selected positions.

26. In an adding machine, an adding pinion, a rack for operating saidadding pinion, a ldevice for limiting extentv of movement of said rack,a releasable latch connecting said' rack With said device, differentialstops settable to stop said device and thereby said raclrin differentselected positions, means for moving said raclr to the differentselected positions, a releasable connection between said device and saidrack whereby they are held togetherA for concurrent movement, and Vmeansfor releasing said connection to enable said rack to move independentlyof said device.

27. Inan adding machine, an adding pinion,a rack for'operating saidadding pinion, a controlling device for said rack, a member for stoppingsaid controlling device and thereby said raclr, an element arranged tocoperate with said controlling device to stop the sa1ne,a connectionbetween said con trolling device and said element whereby they maybemoved together, and means for disconnecting said connection to enablesaid controlling device to move independently of said element.

28. In an adding machine, an adding pinion, a rack for operating saidadding pinion, a controlling device for said rack, a mem` ber forcontrolling said controllingdevice, an element for stopping said member,a latch vconnection whereby said lelement and said member will be heldtogether in operation, and means for releasing said latch connection andenabling said member to be operated independently loi said element.

29. In an adding machine, an adding pinion, a rack for operating saidadding pinion in adding and yclearing operations and controlled by saidadding pinion in clearing operations, a controlling device forcontrolling said rack inadding operations, a member for controlling saidcontrolling vdevice in addingoperatio'ns, an element limiting movement:ofs'aid member iniadding operai-'f tions, and means vfor operating saidmember and said rack independently of said element in clearingoperations- 1 ff- 30. In an adding machine, an addingpin# ion, atype-carrier operable-l '1 recording operations, a raclr'operatedby-saidtypeoarrier inv adding. and clearing i operations, a controlling devicefor Esaid rack: in'ja'dding operations, a i member-for :controlling saidcontrolling device and vthereby@ saiditype` carrier and 1 said if rackin 'recording-randVv adding operations, .an element for ilimitingmovement of said memberin certain adding operations, and means foroperating saidE member and said type-carrier and rack-.ine..dependentlyV of said element in operations to: clear said adding pinionand to :recordfthef total represented therein. f 2.1i

31. In anV adding machine, an 'addingpmion, a type-carrier loperable-pin recording operations, meanswhereby, said typefcarrier willoperate said pinionin adding'v and in clearing operations, acontrolling'devicefon controlling said type-.carrier in adding opere,

ations, a member for controlling said :con-,-Y trolling device inadding. operations, an eley ment coperating with s aidmember:invoer--ltain adding operations, said member 4operating independently of saidelement-.in certain other adding operations andinrclearing. operations,and means for limiting 1noveI ment of said elemenh--f i I 1' i 32. In anadding machine, an addingfpin# ion settable to represent a plurality ofdigits at a single operation, a type-carrier operable in recordingoperations: tol .record 'fa plurality of digits at a singleoperationcor'- responding to the digits represented-in said.

adding pinion, stops. arranged inl numerical orders, and mechanism vforcontrolling .the operation of said type-carrier in any selectedoperation thereof by stops set inya .plurality of numerical orders.

33. In an adding machinegan ion, a rack for operating said addingpinion, a recording instrumentality for operatingR said rack, acontrolling device for the re# cording instrumentality, a" vpinion in con-` nection with said controlling device-for limiting movement of thesame, a rackmesh-r4 ing with said pinion, an elementor limiting movementof said rack, a releasable latch connecting said element -and said rack,and

means for releasing, said latch to enablesaid rack to move independentlyof said element.

34. In an adding machine, an adding pine`- ion, a rack foroperating saidaddingpinion an additional rack in connection with-said first-namedrack, a'controlling pinion meshingvvith said additional rack, anadditional pinion 1n connection with saidfcontrolling incense betweensaid element and said last-named rack, means for releasing said latch toenable said last-named rack to be operated independently of saidelement, and means for rengaging said latch to cause said element andsaid last-iiamed rack to be operated together. Y l

35. In an adding machine, a type-carrier movable to and from recordingpositions, differential mechanism, a movable element controlled by thedifferential mechanism, a rack in connection with said movable element,a pinion meshing with said rack, and a rack in connection with saidtype-carrier under control of said pinion, whereby extent of` movementof said type-carrier is determined by said movable element and thedifferential mechanism.

v36.l In an adding machine, dierential mechanism settable .to representthe digits of numbers, a type-carrier movable to recording positionscorresponding to the digits set in the differential mechanism, a rack inyconnection withsaid type-carrier, a pinion meshing lwith said-rack,amovable element y.controlled by the differential mechanism,

and .a rack in-connectionwith said movable element for stoppingrotationof said pinion to stop said type-carrier in recording positionscorresponding to the digits set in the dierential mechanism.

37. In an adding machine, dilerential mechanism settable to representthe digits of numbers, a type-carrier movable to recording positionscorresponding to the digits l set in `the diiierential mechanism, a rackin connection with the type-carrier, a pinion meshing with said rack, amovable element controlled by the dillferential mechanism, a

controlling rack in connection with said movable element for controllingsaid pinion to stop said type-carrier in recording positionskcorresponding to the digits set in the differential mechanism, andmeans for releasing ysaid controlling rack from said element to enablesaid controlling rack to op- .mounted, a rack in connection with saidtype-carrier, a pinion meshing with .said rack, a controlling rackforlimiting rotation of said pinion, and means under control of the.diierential mechanism for limiting movement of said controlling rack.

39. In an adding machine, a type-carrier movable to and .from recordingpositions,- differential mechanism, an element con- ,.trolled by thedifferential mechanism, a convtrolling rack releasably connected to saidelement, .a rack in connection with said typecarrier, apinion meshingwith said lastnamed rack and being under control of said controllingrack, whereby said type-carrier is stopped in positions corresponding tothe digits setin the diiferential mechanism, and an adding pinion undercontrol of said typecarrier.

i0. In an adding machine, a type-carrier movable to and from recordingpositions, a rack in connection with the type-carrier, a pinion meshingwith the iacli, a controlling rack for controlling said pinion,diiierential mechanism, a movable element controlled by saiddifferential mechanism, a releasable latch connecting said controllingrack and said element, and means for releasing said latch to enable saidcontrolling rack to move independently of said element as an incident tooperation of said parts after certain digits have been set in thedifferential mechanism.

4l. In an adding machine, a type-carrier, type supported by saidtype-carrier, means for cooperating with said type to record, a rackinconnection with said type-carrier, a pinion meshing with said rack,stops, a movable element controlled by said stops, a con- .latchconnecting said controlling rack and said element, means holding saidlatch in latched position, and means for disengagiiig said latch toenable said controlling rack to move independently of said element. 4:2.In an adding machine, a type-carrier, recording type supported by saidtype-carrier, means for cooperating with said type to record as anincident to operation of said type-carrier, a rack in connection withsaid typecarrier, a pinion meshing with said rack, stops, a movableelement controlled by said stops, a controlling rack for controllingsaid pinion, a latch holding said controlling rack and said elementtogether or equal movement when said type-carrier is operated to recordany single one of the ten digits, and means for releasing said latch toenable said controlling rack to operate independently of said elementwhen said type-carrier is operated to record two digits at a singleoperation.

43. In an adding machine, a type-carrier, a type on said type-carrierfor each of the ten digits, type blocks on said type-carrier eachprovided with two digits, a rack in connection with said type-carrier, apinion meshing with said rack, stops, a movable element controlled bysaid stops, a controllin sai type-carrier in any selected position, alatch connecting said controlling rack and vsaid element whereby saidcontrolling rack and said element are operated equal clistances undercontrol of a single stop when the type-carrier is operated to positionto record any one of the ten digits, and means for releasing said latchto enable said controlling rack to operate independently oifl rack forcontrolling said pinion to stop said element vwhen said type-carrier isoperated to position any one of said type blocks having the two typethereon for recording.

44. In an adding machine, a type-carrier,

V'recording type supported by said type-carrier, means for cooperatingwith said type to record as an incident to operation of saidtype-carrier, a rack in connection with said a type on said type-carrierfor each of the ten digits, type blocks on said type-carrier eachprovided with two digits, afrack in connection with said type-carrier, apinion meshing with said rack, stops, a movable element controlled bysaid stops, a convtrollingrack for controlling said pinion Vto stop saidtype-carrier in any selected position, a latch connecting saidcontrolling rack and-said element whereby saidcontrolling rack and saidelement are operated equal distances under control of a single stop whenthe type-carrier is operated to position' to record vany one of the tendigits, means for releasing said latch to enable said Vcontrolling rackto operate'independently of said element when said type-carrier isoperated to position` any one of said'type blocks having the two typethereon for recording,

carrier.

46. In an adding machine, a type-carrier, type blocks on saidtype-carrier eachlprovided with two digits, a rack in connection withsaid type-carrier, a pinion meshing with said rack, stops, a movableelement controlled'by said stops, a controlling rack for controllingsaid pinion to stop said typecarrier in any selected position, a latch-,con-

neet-ing said controlling rack and said element,`and means for releasingsaid latch to enable said controlling rack to move to position to stopsaid type-carrier ,in position to hold any selected one of said'typeblocks in position to be driven to print.V v

47. In an adding machine, a type-carrier, type blocks on saidtype-carrier each'provided with two digits, a rack in connection withsaid type-carrier, a pinion meshing v with said rack, stops, a movableelement controlled by said blocks. a controlling rack for controllingsaid pinion to stop said typecarrier in position to hold any selectedone yrnerical orders.

01"" said type blocks inV printing position, a

latch connecting said controlling raclrand Y clearing operations, 'arackin connection with said type-carrier, a pinion meshing with saidrack, a controlling rack for said pinion, stops, a movable elementcontrolled by said stops, and a releasable latch connecting saidcontrolling rack and said element, whereby said controlling rack andsaid element will be operated together and will limit movement of saidypinion Iand said type-carrier.

` 49. In an adding machine, stops settable in units and tens numericalorders, an adding pinion, a rack for operating said adding pinion, acontrolling pinion for limiting movement of said'rack in one direction,a controlling rack orcontrolling said pinion, a movable element whosemovement is limited by astop'inV units numerical order, a releasablelatch connecting said controlling rack and said movable element, and adevice for releasing said latch when said movable element is operatedafter a stop other than the zero stop has been set in tens nu- 50. In anadding machine, a'typ'e-carrier, a rack in connection with saidtype-carrier,

"a pinion meshing with said rack, a controlling rack for said pinion,stops settable in units and tens vnumerical orders, a movable `elementunder control of any stop that may and an adding pinion operated by saidtypebe set in units numerical'order, a releasable zero stop has` beenset. in tens numerical order, and means for releasing said latch as 4anincident to operation ofsaid controlling rack rand said element after astop other than zero stop has been set in tens numerical orden a Y 51.In an adding machine, a type-carrier, type blocks on saidtype-carrier, acontrolling rack, a movable element, arreleasable v"latch connectingsaid controlling rack and said element, digit stops settable in unitsand tens numerical orders, means for releasing jsaid latch as anincident to operation of said controlling rack and said movable elementafter certain stops have been4 set, and a device under control ofsaidrack for limiting movement of said type-carrier, whereby any Vdesiredtype `block may be positioned in position for recording.

52. In an adding machine, an adding pinion, a rack for operating saidadding pinion, a pinion for limiting movement of said rack in onedirection, an additional 5 pinion in engagement with said irst-namedpinion, a controlling rack meshing With said additional pinion,a-movable element having a slot therein, a pin on said controlling rackextending through said slot, a

10 latch supported by said element engaging said pin and latching saidcontrolling rack and said element together for uniform movement, stopssettable to limit movement of said element, a device for releasing saidlatch, and means for controlling said releasing device Whereby saidlatch Will be permitted to remain in latchng engagement with said pin incertain operations and Will be released from Said pin in certain otheroperations.

BIRNEY DYSART.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents,

' Washington, D. C.

